Recent content by johnsonc007

Still doesn't help. Trying to teach myself via text this due to lack of interaction from professor. Ended up buying the solution online. Would have never seen the setup, still don't follow how it becomes that.

This is actually a homework problem that I am also stuck on. Following the above method equals the wrong answer. I can honestly say it doesn't make sense either. That doesn't make a rectangle.

Ok. Totally makes sense for part 'a', actually figured it out last night with a study partner. Now for part 'b': I was considering that the resistor input was work transfer, not heat transfer. Why is the resistor considered a heat transfer source? Your assistance helped me finish the...

1. The problem at hand: A gas is contained in a closed rigid tank. An electric resistor in the tank transfers energy to the gas at a constant rate of 1000W. Heat transfer between the gas and the surroundings occurs at a rate of Q[SIZE="1"](dot) = -50t, where Q [SIZE="1"](dot) is in watts, and t...

The normal acceleration to the curve is the tension in the rod.

The cross product is defined by u X v = |u||v|sin(angle). Solve for the angle.

You need to find out the time elapsed from the time the ball was thrown until it landed. Using the projectile formula for y, one can solve for t for the time it left until it landed. y=(Vi)sin(angle)t-1/2gt^2

2 boxes are stacked vertically, box A on top with box B below. Mass of box A is 15kg. Mass of box B is 30kg. There is friction between all surfaces; static coefficient of 0.40, and kinetic coefficient of 0.35. The blocks are stationary when the constant force F is applied to box B (bottom box)...